Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 19, 2025
The
novel
Co(II)
coordination
polymer
incorporating
2-iodo-4-sulfobenzoic
acid
(H2isba)
and
a
pliable
1,4-bis(benzimidazole-1-methyl)
benzene
(bdbmb)
ligand,
{[Co(bdbmb)(H2O)4]·isba·2H2O·2DMA}n
(Co(II)-CP),
was
synthesized.
In
addition,
the
composite
of
Co(II)-CP
with
short
hydroxyl
multiwalled
carbon
nanotubes
(Co(II)-CP@HCNTs)
prepared
via
an
in
situ
preparation
strategy.
Amperometric
current
response
reveals
that
glass
electrodes
(GCEs)
Co(II)-CP@HCNTs
exhibit
highly
sensitive
electrochemical
sensing
toward
NO2-
Fe3+
corresponding
electrolytes.
demonstrate
superior
electrocatalytic
performance
oxidation
Fe3+reduction
to
Co(II)-CP.
mechanisms
for
were
illustrated
Hirshfeld
surface
analysis
density
states
calculations.
Furthermore,
this
methodology
successfully
implemented
on
miniaturized
screen-printed
electrode
(SPE)
platform.
Among
three
tested
electrodes,
Co(II)-CP@HCNT-modified
SPEs
exhibited
capabilities,
showing
ranges
0.002-20
mM
nitrite
0.002-38
ferric
ions,
respectively.
calculated
detection
limits
reached
0.12
μM
(δ
=
0.00396
μA,
N
10)
0.30
0.00201
10).
Moreover,
Co(II)-CP@HCNTs/SPE
further
validated
through
practical
applications
both
analytes
real-world
samples
respective
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 7, 2025
Abstract
Developing
functional
metal–organic
frameworks
(MOFs)
with
high
electrical
conductivity
is
crucial
for
their
applications
as
advanced
electronic
materials.
In
this
work,
we
the
first
time
construct
a
new
family
of
and
highly
conductive
MOFs
using
metalloporphyrazine
(MPz)
ligands
based
on
trimming‐π
concept
via
cutting
benzene
ring
from
molecular
metallopthalocynine
(MPc).
The
deprotonation‐after‐coordination
synthetic
method
affords
crystalline
MPz−Cu−NH
square
lattices.
Four‐point
probe
measurements
reveal
room
temperature
MPz‐based
ranging
3.5×10
−2
to
1.3×10
−1
S
cm
,
two
orders
magnitude
higher
than
MPc‐based
MOF
counterparts.
Temperature‐dependent
band
structure
analysis
demonstrate
ultra‐small
activation
energies
potential
metallic
conducting
behavior
MOFs.
Encapsulation
aromatic
guest
molecules
different
electron‐donating
‐withdrawing
features
allows
modulation
CuPz−Cu−NH
in
wide
range
spanning
magnitude.
These
built‐in
MPz
units
exhibit
identity‐dependent
sensing
performance,
realize
sensitive
detection
NH
3
NO
2
low
driving
voltage
0.1
V.
ACS Physical Chemistry Au,
Год журнала:
2025,
Номер
5(3), С. 266 - 273
Опубликована: Март 4, 2025
For
enhancing
the
performance
of
electric
double-layer
capacitors,
porous
electrodes
must
be
further
optimized.
While
many
studies
on
electrolyte
and
electrode
structures
enable
detailed
insights,
length
pore
channels
has
been
overlooked.
Here,
we
use
films
two-dimensional
conductive
metal–organic
frameworks,
where
film
thickness
(and
thus
channel
length)
is
rationally
tuned
over
a
wide
range.
Cyclic
voltammetry
experiments
with
two
different
electrolytes
were
conducted,
revealing
charge
transport
kinetics
in
electrodes.
highly
mobile
electrolyte,
not
limited
by
ion
(i.e.,
diffusion)
even
for
thick
films,
exhibiting
mainly
surface-controlled
kinetic
behavior.
In
contrast,
less
primarily
diffusion,
severe
impact,
long
result
strongly
decreased
capacitances,
highlighting
importance
adjusting
length.
